| Share | Phrase |
| 18.81% | flow restrictor |
| 12.30% | variable [time periodicity] restrictor |
| 4.34% | restrictor valve |
| 4.33% | laminar [structure] restrictor |
| 3.65% | restrictor orifice |
| 2.76% | tertiary [numeric] restrictor |
| 2.56% | form restrictor [perform operation] |
| 2.17% | restrictor [does] restrict |
| 1.96% | restrictor [is] restrictor |
| 1.96% | restrictor [is] restrictor |
| 1.78% | dispose restrictor [perform operation] |
| 1.71% | arrange restrictor [perform operation] |
| 1.61% | one-way [direction] restrictor |
| 1.43% | secondary [numeric] restrictor |
| 1.32% | fixed [time periodicity] restrictor |
| 1.32% | backflow restrictor |
| 1.17% | provide restrictor [perform operation] |
| 1.16% | adjustable [physical/chemical] restrictor |
| 1.15% | comprise restrictor [perform operation] |
| 1.13% | include restrictor [perform operation] |
| 1.03% | restrictor passage |
| 1.02% | restrictor subchamber |
| 1.02% | main [importance] restrictor |
| 1.02% | realise restrictor [perform operation] |
| 0.92% | bypass restrictor [perform operation] |
| 0.91% | connect restrictor [perform operation] |
| 0.90% | restrictor impedance |
| 0.80% | open restrictor [perform operation] |
| 0.79% | restrictor constriction |
| 0.77% | restrictor section |
| 0.75% | restrictor plate |
| 0.74% | perfect [completeness] restrictor |
| 0.71% | restrictor means |
| 0.70% | difference across restrictor |
| 0.69% | restrictor device |
| 0.65% | orifice restrictor |
| 0.61% | locate restrictor [perform operation] |
| 0.59% | in-line [direction] restrictor |
| 0.59% | primary [numeric] restrictor |
| 0.55% | restrictor [does] have |
| 0.53% | additional [importance] restrictor |
| 0.51% | have restrictor [perform operation] |
| 0.50% | restrictor [does] form |
| 0.49% | flow through restrictor |
| 0.49% | restrictor [does] comprise |
| 0.48% | restrictor flow |
| 0.48% | couple restrictor [perform operation] |
| 0.45% | restrictor outlet |
| 0.43% | restrictor [does] allow |
| 0.41% | restrictor [does] control |
| 0.41% | restrictor communicate |
| 0.41% | restrictor assembly |
| 0.41% | constitute restrictor [perform operation] |
| 0.37% | close restrictor [perform operation] |
| 0.35% | restrictor [does] include |
| 0.34% | restrictor [does] prevent |
| 0.33% | restrictor [does] close |
| 0.33% | pass through restrictor |
| 0.33% | restrictor [does] provide |
| 0.33% | attach restrictor [perform operation] |
| 0.33% | position restrictor [perform operation] |
| 0.33% | restrictor [using as instrument] provide |
| 0.32% | controlled [functioning] restrictor |
| 0.32% | restrictor side |
| 0.31% | insert restrictor [perform operation] |
| 0.29% | fit restrictor [perform operation] |
| 0.29% | restrictor opening |
| 0.29% | restrictor effect |
| 0.25% | show in restrictor |
| 0.25% | restrictor rod |
| 0.25% | restrictor [does] change |
| 0.25% | restrictor [does] determine |
| 0.24% | constant [time periodicity] restrictor |
| 0.24% | restrictor [does] limit |
| 0.23% | define restrictor [perform operation] |
| 0.23% | restrictor [does] reduce |
| 0.22% | place restrictor [perform operation] |
| 0.21% | restrictor [does] connect |
| 0.20% | remove restrictor [perform operation] |
| 0.19% | fluid [state] restrictor |
| 0.19% | use restrictor [perform operation] |
| 0.18% | contain restrictor [perform operation] |
| 0.18% | restrictor area |
| 0.16% | oil restrictor |
| 0.15% | restrictor control |
| 0.15% | show restrictor [perform operation] |
| 0.15% | restrictor member |
| 0.14% | valve restrictor |
| 0.12% | restrictor unit |
| 0.10% | restrictor modal may |
| 0.09% | restrictor portion |